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Polymer international v.67 no.8, 2018년, pp.1094 - 1102  

Enhanced fracture energy during deformation through the construction of an alternating multilayered structure for polyolefin blends

Zhou, Yan (College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, China ) ; Zhou, Yi (College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, China ) ; Deng, Hua (College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, China ) ; Yuan, Li (ExxonMobil Asia Pacific Research and Development Co., Ltd., Shanghai, China ) ; Chen, Yumin (ExxonMobil Asia Pacific Research and Development Co., Ltd., Shanghai, China ) ; Zhang, Shanshan (ExxonMobil Asia Pacific Research and Development Co., Ltd., Shanghai, China ) ; Fu, Qiang (College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Ch ) ;
  • 초록  

    The effects of polymer blend components on the phase morphology, crystallization behavior and mechanical performance of materials processed by high speed thin‐wall injection molding (HSTWIM) and compression molding (CM) processes were investigated. High density polyethylene (HDPE) and polypropylene (PP) containing different ratios of rubber phase (0%, 18% and 21%) were selected to construct different blends. HSTWIM is shown to trigger the formation of a multilayered structure for these blends with oriented polymer crystals and epitaxial growth of HDPE crystals on PP. Such a layered structure is thought to provide a good template for morphological control of various functional polymer composites. Moreover, the addition of rubber in the multilayered structure with the rubber phase partially distributed between layers is observed. These issues are thought to be responsible for the much enhanced fracture energy compared with specimens from CM. The structural details and formation mechanism of these layered structures consisting of different compositions were investigated. Such a study could provide some guidelines for the preparation of high performance bio‐mimic materials or various functional polymer composites with alternating multilayered structure. ⓒ 2018 Society of Chemical Industry


  • 주제어

    alternating multilayer structure .   high speed thin‐wall injection molding .   mechanical properties .   crystallization behavior .   interfacial interaction.  

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